{
  "id": "2002-mayjune-readmetxt-3",
  "slug": "2002-mayjune-readmetxt-3",
  "url": "https://dwillis.github.io/uplink/article/2002-mayjune-readmetxt-3.html",
  "year": 2002,
  "month": "May/June",
  "monthNum": 5,
  "headline": "readme.txt",
  "kicker": "",
  "author_name": "",
  "author_title": "",
  "affiliation": "",
  "summary": "The article warns that SF3 census data on school enrollment comes from a sample survey with imputed values and significant error margins, particularly for smaller geographic areas, requiring careful interpretation.",
  "keywords": [
    "census",
    "uncertainty",
    "imputation"
  ],
  "topics": [
    "Data & Databases",
    "Demographics & Census"
  ],
  "technologies": [],
  "full_text": "Cautionary notes about SF3 data\n\n1. This data comes from the census long form, which about one household in six fills out. If the school enrollment question isn't answered despite the best efforts of census-takers, the Census Bureau will use rules it has tested to fill in the database based on known characteristics of the household and its neighborhood. To see what percentage of any area you're studying has this imputed data for this question, see table P110.\n\n2. Because this data comes from a survey, each number has a little cloud of uncertainty around it, just like an opinion poll. We usually call these \"error margins.\" The smaller the geographical area you're studying, the bigger the cloud is relative to the totals. Make sure you're not overstating what the data says by understanding that error margin. Use the SF3 documentation to compute the applicable margin, or get help from a local statistics professor.",
  "provenance": {
    "extracted_by": "anthropic/claude-sonnet-4-6",
    "extracted_at": "2026-07-05",
    "verified": true
  },
  "similar": [
    {
      "slug": "2002-mayjune-readmetxt-2",
      "score": 0.726
    },
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    }
  ],
  "html_url": "https://dwillis.github.io/uplink/article/2002-mayjune-readmetxt-3.html",
  "json_url": "https://dwillis.github.io/uplink/article/2002-mayjune-readmetxt-3.json"
}